Hey, my mom and sister want to come along and I was wondering if there are any rv parks near the con?
I'm not sure about this as I haven't been in San Jose, but I don't think there are any RV parks downtown. Though someone could correct me if I'm wrong. Your best bet might be google.
http://www.rvparkhunter.com/state.asp?state=california
Maybe this will help? :)